Commit 00e7ac1a authored Aug 22, 2013 by Colin Cross Committed by Mitchel Humpherys Dec 12, 2013

ion: don't use id 0 for handle cookie



ion userspace clients think that the cookie is a pointer, so they
use NULL to check if the handle has been initialized.  Set the first
id number to 1.

Change-Id: Ifb9af6029a8b08f57e41bc6160cc11e11001a2a9
Signed-off-by: Colin Cross <ccross@android.com>
Git-commit: 66df93b4c9e78cf433b76d7fe3da4cc7fd06c36b
Git-repo: https://android.googlesource.com/kernel/common


Signed-off-by: Mitchel Humpherys <mitchelh@codeaurora.org>

parent c2bb02d1

drivers/gpu/ion/ion.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -401,7 +401,7 @@ static int ion_handle_add(struct ion_client client, struct ion_handle handle)
		rc = idr_pre_get(&client->idr, GFP_KERNEL);
		if (!rc)
		return -ENOMEM;
		rc = idr_get_new(&client->idr, handle, &id);
		rc = idr_get_new_above(&client->idr, handle, 1, &id);
		handle->id = id;
		} while (rc == -EAGAIN);